Fig4/Sac3 phosphatase, a 97-kDa protein, specifically removes the 5-phosphate from the inositol ring of PI(3,5)P2, a membrane-bound phospholipid, which acts as a molecular signal for trafficking and fusion of intracellular vesicles. It is broadly expressed in all eukaryotic cells and plays a vital role in intracellular membrane trafficking and signaling. nMutations in Fig4/Sac3 have been linked to pale tremor mice that exhibit neuropathy with severe central and peripheral neuronal degeneration, including the loss of neurons in the dorsal root ganglion and the sciatic nerve. Fig4/Sac3 knockout mice have been shown to be smaller in size and exhibit abnormal tremor and gait and neuronal autophagy.
StressMarq Biosciences Inc. 在2007年成立于加拿大維多利亞,是一家生物科技公司,專門從事試劑與試劑盒研究,服務范圍遍及全球66多個國家。 StressMarq公司的核心技術領域為細胞應激(尤其是熱休克蛋白(HSP)領域,領先全球),離子通道,載體研究,同時在神經科學領域推出特有的具有生物活性的Tau蛋白與A-突觸核蛋白。產品領域涉及到:細胞凋亡、細胞信號、通路和轉運、細胞器標志物、熱休克、神經生物學、神經科學、氧化應激、磷酸化運輸等。除了提供用于進一步研究的相關工具外,Str